做好鸡舍的带鸡消毒

带鸡消毒就是对鸡舍内的一切物品、鸡体及空间,用一定浓度的消毒药液喷洒消毒。它是当代集约化养鸡综合防疫的重要组成部分,是控制鸡舍内环境污染和疫病传播的有效手段之一,尤其对那些隔离条件差,不同批次的鸡在同一鸡场饲养及各种疫病经常发生的老鸡场更为有效。1带鸡消毒的作用带鸡消毒能有效杀灭鸡舍空气中浮游的各种细菌、病毒,减少鸡舍内漂浮的尘埃,抑制一氧化碳、二氧化碳及氨气等有害气体的产生,净化了鸡舍内的空气,从而有效地防止鸡呼吸道疾病的发生。能有效地杀灭鸡舍内的多种病原微生物,减少由病鸡排出的病原体在鸡舍内的积累,并…     

带鸡消毒方法及注意事项

带鸡消毒是对鸡舍内的所有物品及鸡体用消毒药液喷雾消毒。它是现代集约化养鸡场综合防疫的一种重要措施,也是防止鸡舍环境污染和传播疫病的主要手段。这种消毒方法省工、方便、及时,消毒效果比较理想。特别是隔离条件差、不同日龄鸡群在同一场内饲养以及经常发病的老鸡场,采用这种消毒方法更为有效。带鸡消毒能杀灭鸡舍内的病原体,阻止鸡体排出的病原体积累,并能有效防止鸡舍外的病原体侵入。带鸡消毒可有效防止发生鸡新城疫、马立克氏病、法氏囊病、球虫、白痢、大肠杆菌和葡萄球菌等多种疫病。具体方法及注意事项如下:1带鸡消毒的步骤1.1…     

如何做好鸡舍的带鸡消毒

带鸡消毒就是对鸡舍内的一切物品及鸡体、空间用一定浓度的消毒药液进行喷洒消毒。它是当代集约化养鸡综合防疫的重要组成部分，是控制鸡舍内环境污染和疫病传播的有效手段之一。尤其对那些隔离条件差，不同批次的鸡在同一鸡场饲养及各种疫病经常发生的老鸡场更为有效。     

鸡舍的带鸡消毒

带鸡消毒就是对有鸡的鸡舍内的一切物品及鸡体用消毒液喷雾消毒。它是当代集约化养鸡综合防疫的重要组成部分,是控制鸡舍内环境污染和疫病传播的有效手段之一。尤其对那些隔离条件差、不同日龄的鸡群在同一鸡场饲养及各种疫病经常发生的老鸡场更为有效。     

带鸡消毒技术的应用

带鸡消毒就是对鸡舍内的一切物品及鸡体、空间用一定浓度的消毒药液进行喷洒消毒.它是当代集约化养鸡综合防疫的重要组成部分,是控制鸡舍内环境污染和疫病传播的有效手段之一,是减少疫病传播和感染的最重要的防控措施.     

带鸡消毒技术的应用

带鸡消毒就是对鸡舍内的一切物品及鸡体、空间用一定浓度的消毒药液进行喷洒消毒。它是当代集约化养鸡综合防疫的重要组成部分,是控制鸡舍内环境污染和疫病传播的有效手段之一,是减少疫病传播和感染的最重要的防控措施。尤其对那些隔离条件差,不同批次的鸡在同一鸡场饲养及各种疫病经常发生的老鸡场更为有效。     

带鸡消毒的技术要点

随着禽业的发展，人们越来越重视疾病防治，但对消毒还是认识不足，尤其是带鸡消毒。一些专业户只知道养鸡搞好疫苗免疫，鸡生病就用药治疗，而不注重利用有效的消毒措施来净化鸡舍的环境卫生，防制疾病。我们强调“防重于治”的原则，就是在用好疫苗免疫的同时，在日常饲养过程中搞好环境卫生消毒工作，通过有效的消毒措施来降低鸡舍内病原微生物的数量，创造一个良好的饲养环境，配合疫苗的免疫效果来控制疫病的发生，消除疾病隐患，使鸡群健康生长，提高养鸡生产水平和经济效益。 一、带鸡消毒的好处 鸡舍虽在进鸡前已彻底消毒过，但在饲…     

鸡舍内带鸡消毒的方法及注意事项

带鸡消毒是养鸡生产中综合防疫的重要组成部分,是控制鸡舍内环境污染和疫病传播的有效手段,但有些养殖户只重视进鸡前的消毒工作,而忽视饲养过程中的卫生和消毒,进雏后随着时间的推移,鸡舍内污染不断加重,环境逐渐恶化,病菌大量繁殖,导致鸡群染病风险加大,为了保证鸡群的健康生长,进行带鸡消毒非常重要。下面谈谈带鸡消毒的方法及注意事项。     

鸡舍的带鸡喷雾消毒要点

带鸡喷雾消毒是当代集约化养鸡场综合防疫的重要组成部分,是控制鸡舍内环境污染和疫病传播的有效手段之一。鸡舍在进鸡前虽然经严格     

鸡舍带鸡消毒的科学方法

带鸡消毒是当前集约化养鸡综合防疫措施的重要组成部分,尤其是对那些隔离条件差,经常发生疫病的老鸡场更为有效。带鸡消毒具有如下作用:①通过接触皮肤和呼吸作用杀灭多种病原微生物,有效地防止马立克氏病、法氏囊病、葡萄球菌病、大肠杆菌以及各种呼吸道病的发生;②创造良好的鸡舍环境,减少鸡舍尘埃,抑制氨气发生。带鸡消毒程序和     

商会自治的基石——商会自治规范研究

在现代法律秩序中,商会自治规范是制定法的基础和必要的补充,甚至在某些方面替代了制定法;商会自治规范主要包括商会组织规范、行为规范、惩罚规范以及争端解决规范等;其效力仅及于其内部成员;商会自治规范和制定法之间存在冲突,但也存在整合的基础。     

癸氧喹酯干混悬剂含量测定的改进

采用高效液相色谱法测定癸氧喹酯干混悬剂的含量,在2-250μg/mL范围内,峰面积的常用对数与进样量浓度的常用对数呈良好的线性关系,R^2=1(n=5),平均回收率为99.24%~99.51%,RSD在0.05%~0.28%。此方法分析时间短,样品前处理简便、定量结果准确,重现性好,结果满意,为其质量控制提供了依据。     

猪毛色遗传的研究进展

本文概述了猪的毛色类型、猪的毛色遗传模式,着重综述了猪毛色基因分子基础的研究进展,指出存在问题并就未来发展方向做了思考。     

Comparison of 2 methods of centesis of the bursa of the biceps brachii tendon of horses

REASONS FOR PERFORMING STUDY: Centesis of the bicipital bursa using an 8.9 cm long spinal needle has been reported but the alternative of employing a 3.8 cm long hypodermic needle requires validation. OBJECTIVE: To compare the efficacy of 2 different methods of centesis of the bicipital bursa and to evaluate the usefulness of ultrasonographic imaging to determine the location of solution administered when centesis of the bursa is attempted. METHODS: For Trial 1, 6 clinicians, who had no previous experience of centesis of the bicipital bursa, attempted to inject a solution composed of an aqueous radiopaque contrast medium and physiological saline solution (PSS) into the bicipital bursae of 2/12 horses using the previously described distal approach to inject one bursa and a proximal approach to inject the contralateral bursa. The bicipital tendon and bursa were examined ultrasonographically before and after injection; and both shoulders were examined radiographically to identify the location of the medium. In Trial 2, another 6 clinicians, also with no previous experience of centesis, repeated Trial 1, using 6 horses, but the radiopaque contrast medium was mixed with air instead of PSS. RESULTS: Accuracy of centesis using the proximal approach was 39% and that of the distal approach 28%. Ultrasonographic examination of the shoulder allowed the location of solution and air to be accurately predicted in all 12 shoulders examined. CONCLUSIONS: Clinicians who have had no previous experience performing centesis of the bicipital bursa are unlikely to be successful in centesis using either approach. Radiographic examination after injecting a radiopaque contrast medium may be necessary to assess the success of centesis especially if bursal fluid is not obtained during centesis. Injecting air along with the radiopaque contrast medium provides more accurate ultrasonographic confirmation of centesis and better radiographic definition than does injection without air.     

不同样本商品蜂蜜中硒含量的测定

用硝酸和高氯酸消化蜂蜜,使硒游离出来,在微酸性环境下,硒和2,3-二氨基萘(DAN)生成有较强荧光的物质,用环己烷萃取,在激发波长378nm,荧光波长518nm处测定其荧光强度。蜂蜜中硒含量范围:0.10～0.82μg/g。表明:蜂蜜应视为天然富硒营养品。     

乳酸杆菌益生作用机制的研究进展

乳酸杆菌作为益生菌广泛用于人和动物。本文综述了乳酸杆菌改善宿主健康的机制。乳酸杆菌可通过产生抗菌物质如乳酸、过氧化氢、细菌素,或者通过竞争营养或肠道黏附位点来抑制致病菌;通过诱导黏附素的分泌或阻止细胞凋亡而增强肠道的屏障功能,从而保护肠道。文章重点讨论了乳酸杆菌表面成分（表面蛋白、脂磷壁酸和肽聚糖）与肠道受体（Ｃ型凝集素受体、Ｔｏｌｌ样受体和 Ｎｏｄ样受体）,阐述了他们结合后启动免疫调节信号,调控肠道免疫功能以发挥改善健康作用的机制。     

Effects of size of ingestively masticated fragments of plant tissues on kinetics of digestion of NDF

Ingestively masticated fragments were collected and sized via sieving. Different sizes of esophageal masticate and ruminal digesta fragments, and ground fragments of larger masticated pieces were incubated in vitro, and undigested NDF remaining at intervals of up to 168 h of incubation was determined. The ruminal age-dependent time delay (tau) for onset of digestion of NDF was positively correlated (P < 0.004) with the mean sieve aperture estimated to retain 50% of the fragments between successive sieve apertures (MRA). Degradation rate of potentially degradable NDF (PDF) and level of indigestible NDF were not related (P > 0.10) to MRA of masticated and ground fragments. Estimates of tau were positively related to MRA, with slopes of bermudagrass < corn silage < ruminal fragments of corn silage. It was concluded that fragment size-, and consequently, ruminal age-dependent onset of PDF degradation of a mixture of different fragment sizes results in an age-dependent rate of degradation of the more rapidly degrading of two subentities of PDF. Models are proposed that assume a tau before onset of simultaneous degradation of PDF from two pools characterized as having gamma-modeled age-dependency and age-constant rates. The ruminal age-dependent pool seems to be associated with the faster-degrading pool, and its rate parameter increases with range in MRA in the population of fragments. Conceptually, the ruminal age-dependent rate parameter for PDF degradation seems to represent a composite of several effects: 1) effects of the size-dependent tau; 2) range in MRA of the population of ingestively masticated fragments; and 3) subentities of PDF that degrade via more rapid age-dependent rates compared with subentities of PDF that degrade via age-constant rates. The estimated fractional rates of ruminative comminution of ingestively masticated fragments (0.060 to 0.075/h) were of a magnitude similar to the mean fractional rates of PDF digestion (0.030 to 0.085/h), which implies that ruminative comminution may be first-limiting to fractional rate of PDF digestion. The in vivo roles of ingestive and ruminative mastication of fragments on PDF degradation must be considered in any kinetic system for estimating PDF digestion in the rumen. These results and others in the literature suggest that the rate of surface area exposure rather than intrinsic chemical attributes of PDF may be first-limiting to degradation rate of PDF in vivo.     

Mechanism of Action of Probiotic Function of Lactobacilli

乳酸杆菌作为益生菌广泛用于人和动物.本文综述了乳酸杆菌改善宿主健康的机制.乳酸杆菌可通过产生抗菌物质如乳酸、过氧化氢、细菌素,或者通过竞争营养或肠道黏附位点来抑制致病菌;通过诱导黏附素的分泌或阻止细胞凋亡而增强肠道的屏障功能,从而保护肠道.文章重点讨论了乳酸杆菌表面成分(表面蛋白、脂磷壁酸和肽聚糖)与肠道受体(C型凝集素受体、Toll样受体和Nod样受体),阐述了他们结合后启动免疫调节信号,调控肠道免疫功能以发挥改善健康作用的机制.     

中华人民共和国农业部公告 第267号

为贯彻落实《兽药生产质量管理规范》(简称《兽药GMP》),进一步推动兽药GMP实施进程,我部制定了《兽药生产质量管理规范检查验收办法》,现予公告。本公告自2003年6月1日起施行。附件:兽药生产质量管理规范检查验收办法二○○三年四月十日第一章 总则 第一条 为推动《兽药生产质量管理规范》(以下简称兽药GMP)的实施,规范兽药GMP检查验收工作,制定本办法。 第二条 农业部负责全国兽药GMP管理和检查验收工作;负责制修订兽药GMP检查验收管理规定;负责兽药GMP检查员队伍建设和监督管理工作,负责国际兽药贸易中GMP互认工作。 …